This masterclass starts with some general comments on the story and style of the composition, and then the professor makes references to Prokofiev and The Rite of Spring by Stravinsky.
About this specific first movement, they mainly work on fingerings to get the required articulations, and cues to play them together. Character should be more elegant, and articulation more accurate. They also work on the rhythmical precision, rapport, rubato, tempo, clarity, agogics, accents and articulations.